The trunk with the wooden handles and the subject of the article; I just wanted to point out that your trunk could be an officer's storage piece, since there is another very similar trunk attributed to BG Shaler.
I do agree with most of the respondents, that short of legible ID, usually found on the front and sides, it is a difficult leap to make. Keep in mind that there was quite a bit of travel from 1865 on, particularly in the South where destitute males went West to make their mark. Your trunk could have gone West and returned with the effects of the owner upon decease.
In the world of collecting, a wise individual once told me, "if you have to make up a story to explain a piece, walk away, no matter how cool you think it is."
I believe your chest is period, could be an officer's chest, as the Shaler chest proves, but is unlikely, unless you can decipher the writing on the top.
I have included a picture of a crate found in a RR warehouse in 2012, that was repeatedly used to send material back and forth. You can see from the various markings that it was repurposed from infantry accouterments to finally canteens for the quartermaster in Macon, GA. The crate when found still had 12 pristine Gardner canteens still inside.
Note that all visible writing is on the
front and side. No doubt many such crates were again repurposed after the war.